高一英语必修二unit3Computers课件.ppt

Unit3Computers,Guess!,Atoy?,Ahandbag?,Computers,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?,abacus,Guessmore:,Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?,calculator,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.,notebookcomputer,DoyouknowwhoIam?,Ahugecomputer,APC,thehistoryofthecomputer,Palmtop,WhoamI?,Skimming:Gooverthestorytofindoutwhothespeakeris.Writedown3sentencestosupportyouridea.,IwasabletosharemyknowledgewithothersthroughtheWorldWideWeb.,”MyrealfatherwasAlanTuring.”,IwasbuiltasanAnalyticalMachinebyCharlesBabbage.”,Timeline,Thecomputerbeganasacalculatingmachine,1822,AlanTuringwroteabooktodescribehowcomputerscouldbemadetowork,Computershadgrownaslargeasaroom.,1960s,Computerswereusedinofficesandhomes,Computersconnectpeopleallovertheworldtogether.,Scanning:,Inwhichorderisthetextorganized?,TrueorFalse,AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeopleshomes.Sincethe1970s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.,F,T,F,T,F,1.Choosethebestanswers1)Whatsthemainideaofthetext?A.Thecomputerwantstofind“whoheis”.B.Thefunctionalchangeofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryofthecomputer.,Comprehending:,2)Whatcanyouinferfromthetext?A.Thecomputerhasartificialintelligence.B.Thecomputerchangesalotovertheyears.C.Thecomputerwasnotconnectedbyanetworkuntilintheearly1960s.D.Nowthecomputercanonlybeusedtodealwithinformation.,Q1:HowdidthecomputerworkasanAnalyticalMachine?Thecomputerfollowedinstructionsfromcardswithholes.,2.Questions,Q2:Inhowmanywaysdowesaythecomputerchanged?Whatarethey?Size:Intelligence:Speed:Function:Peopleopinion:,smaller,quicker,cleverer,calculating-dealingwith,communicatingwith,clever&useful,1960s,Consolidation:Retelling,1Amonitoris2Thescreenis3Akeyboardis4Amouseis5ACD-ROMis6Aharddiskis,(a)thepartofacomputerthatstoresinformation.(b)thepartofthecomputerthatyoutypeon.(c)thepartofthecomputerthatlookslikeatelevision(d)somethingyouusetoclickonthings(files,etc.).(e)thepartofthemonitorthatyoulookat.(f)aseparatediskthatcontainslotsofinformation.,Matchthewordswiththeirmeanings.,Internet,1.Whatcanthecomputerbeusedfor?,Task2.Discussion,schoolworkgamesemailsmusicandfilmschatinformationphotosshopping,Ourlifehaschanged!,palmtop,smallerdesktop,convenientlaptop,Whataretodayssmallercomputerslike?,2.Whataboutinthefuture?,virtualkeyboards虚拟键盘,Nose-topkeyboard-vest,robot,Whataboutinthefuture?,Supposeyouareareporter.NowyouareinterviewingMr./MissComputer.Samplequestions:,Whatdoyouliketoeat?Whatareyourhobbies?Whatisyo